Loose pulley.



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y tiroirs '1 sri-irse mwmmwmw W'ELLIAM F@ DAGGETT, GF CHICAGO,IQLNG'ISS.

LOGSE PULLEY.

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To al?, whom t may concern: l

Be it known that l, VViLLrAM F. DAGGETT, a citizen of the United States,residing et Chicago, in the county of Cook and State of lllinois, haveinvented e certain new and useful lmprovement in Loose Pulleys, oit'which the following is e full, clear, concise, `reierenee being' had. tothe accompanying drawings, forming e, port of this specification. l

My invention relates to 'Whio i shell reduce to e minimum the frio tios.l .e to the rotation ot the pulley.

lo toe eeeompr-myiug plm-Wings, Figure l is s, cross seetion oie loosevpulley involving my present invention; Z is en eool view' with s righthond portion olf the pul leyg Called o, @upg removed; Fig. S is e view edet-eil of construction.

lo the drawings lshow e rim l sind e, centrally versely extending web 2.rllhis web 2 is preferably .merle integral with the rim l enel hss itsinner or central portion reduced es shown et The web hes e centralopening or aperture ll. @u each side of the web Z and titled against thereducecl portion hereof are two side oups 5-5. These cups o' haveradially errorigel web or flanged portions 6 which. lt against the sidefeces' of the central portion 3 of the flange 2, the. web 2 eno. lsuigesG-beiug machined so as to form e close outil accurate it with one oiioth:1, The outer side-or end `portions 7 ot the oups 5 extend. .radiallyinward and are e pulley having disposed., transs@ 'iiiiefl. A sleeve 9however, is fitted over trie shaft 8 enel inside of the apertures in thesull portions of seid oups, seid end oortioris fitting loosely upon seidsleeve S.,v viithin the oups' 5 are mounted tvvo bell hearingarrangements il ond 12, each oooveniently eonsisting of inner enel outerhall rece rings lll emi l5?.respectively7 emol bells 'lli between seidhaul rece rings, seid bells 'heilig arranged Within side guard @heiss17, The iiuier hall moe rings 14e-lll ogly upon Vthe sleeve 9 endegeixist n loose pulleys snol' itseriuoipel object is to provide osimple elio practice-l construction of loose pulleyY rmecl with cent-rolopertures edeptetl to 'receive the shalt 8 on which the pulley isebutments or shoulelers 19 thereof. The outer bell rece rings litagainst the inner surface of the oups 5 and rota-te with seid `cups. Thesleeve 9 is mede of s length somewhat greater then the Width of theAshovvii provided with e screw 25 Which` passes through e suitablethreaded aperture in seid cup? seiol aperture opening into the controlspese or ehernoer formed. by the two oups 5mi?? one. the centralLaperture fl in the web portion This central space or cham loer ispreferably provided with some lubriotmt such as ves-fine or other greasefor the lubrication the mill bearings. This grease moy beiojectellthrough the aperture inv which the screw 25 tits oud will iirul its weymore or less through the hell bearings and into the smell chambers etthe outer sioles of the some, and also into smell simuler chambers orrecesses formeel iii the enel portions 7 oi the oups 5. Bolts 28 ore'passed through the web portions 5 of the cups 5 snel through the narrowportion of the wel) 2 so es to holcl seid. oups firmly in position.sleeve or hub 9 will he helfl firmly upon the shaft 8 and. that the rimportion. i may rotete relatively to the sleeve 9 hy reason voit theinterposed bell hearing arrangements, the outer bell rece rings l5traveling; with the rim l enel web 2 enel mier hell race rings 14remaining fixed upon the sleeve 9,

rlhus it will be seen that the.'

rotatable hub and rim portions, cup members between said portions, saidcup inembers being litted to the rim portion and rotating therewith andhaving central chamber vportions forming a closed chamber, and ballbearing arrangements inclosed within said chamber of said cup members,said ball bearing arrangements being mounted upon said hub portion.

2. A loose pulley comprising relatively rotatable' hub and rim portions,cup members between said portions, said cup mem bers being litted to therim portion and rotating therewith and having central chamber portions,and ball bearing arrangements within the chamber portions of said Cupmembers, said ball bearing arrangements being'mounted upon said hubportion, said chamber portions of said cup members affording chambers orreceptacles for lubricating material for said ball bearing arrangements.l

3. A loose pulley comprising relatively rotatable hub and rim portions,cup members between said portions, said Cup members being litted to therim portion and rotating therewith and having central chamber portions,and ball bearing arrangements within the chamber portions of said cupmembers, said ball bearing arrangements being mounted upon said hubportion, said rim portion having a transversely extending web locatedbetween said cup members, said cup .members being litted and secured tosaid web.

4. A loose pulley comprising relatively rotatable hub and rim portions,cup members between said portions, said cup members being tted to therim portion and rotating therewith and having central chamber portions,and ball bearing arrangements within the chamber portions of said cupmembers, said ball bearing arrangements being mounted upon said hubportion, said rim portion having a 'transversely extendingr web locatedbetween said cup members, said cup members being fitted and secured tosaid web, said `web having a central aperture affording communicationbetween said cup chambers.

5. A loose pulley comprising relatively rotatable hub and rim portions,cup members between said portions, said cup members being litted to therim portion and rotating therewith and having central chamber portions,and ball bearing arrangements within the chamber portions of said cupmembers, said ball bearing arrangements being mounted uponsaid hubportion, said rim portion having a transversely extending web locatedbetween said cup members, said cup members beinga sleeve adapted to fitwithin said cup memfittedtaud seeured. tov` said web, said hub portionbeing tormedby" bers and also withinsaid ball bearing arrangements andbeing provided with means for holding the latter in position.

(i. A .loose pulley comprising relatively rotatable hub and rimportions, cup members between said portions, said cup members beingfitted to the rim portion and rotating therewith and having centralchamber portions, and ball bearing arrangements within the chamberportions of said cup members, said ball bearing arrangements beingmounted upon said hub portion, said rim portion having a transverselyextendin web located between said cup members, said cup members beingfitted and secured to said web, said hub portion being :formedv by asleeve adapted to fit within said cup members and also within said ballbearlng arrangements and being provided with means for holding thelatter in position, said sleeve being provided with a projecting endhaving a slot, a collar mounted on -sind projecting end and providedwith a screw adapted to pass through said slot and engage said shaft.

7.' A loose pulley comprising a rim portion having a transverselyextending webprovided with a central reduced portion having a centrallylocated aperture, cup members on opposite sides of said web, said cupmembers having flanges adapted to fit against the reduced portion ofsaid web"and also against the shoulders at the outer edge of saidreduced portion, said cup members being hollow and having inwardlyextend ing end portions provided with central apertures for a shaft,ball bearings arranged within said cup members, one ball bearing in eachcup member at one side of said web, one of said cup members having anaperture ali'ording communication between the outside of said cup memberandthe space within the same for the injection of a. lubricant, a sleevearranged within the cup mem bers and fitting the apertures in the endportions ot the same, said sleeve supporting said ball bearings andbeing provided with shoulders for engaging and holding the latter inposition, bolts extending through the iianges of said cup members andalso through said web so as to hold said cup members in position, andmeans for engaging said sleeve with, a shaft passing through the same.

S. The combination with the cup members forming a closed chamber, ofball bearings arranged within and inclosed by said cup members.

9. The combination with the cup members forming a closed chamber, ofball bearings arranged within and inclosed by mid cup members, and asleeve .arranged within said ball bearings.

10. The combination of a cup member having :m internal annular chamber,a ball 1n Witness whereof, I hereunto subscribe v bearing arrangedwithin said chamber, a my name this 10th day of March,A.D.,196.

sleeve Within the ball bear'm, and means y for holding the cup memberetachably in Y WILIAM F' DAGGETT' 5 place over the. ball bearing saidcup mem- Witnesses:

bel' being removable to permit the removal A. LYDA JONES,

of said bearingn e HAZEL A. JONES.

